Primary pelvic hydronephrosis in children: a retrospective survey

A retrospective review of 63 children with primary pelvic hydronephrosis has revealed many features similar to those in adults. A plea is made for the greater use of pressure/flow studies in the renal pelvis in the assessment of hydronephrosis. The value of a modified and simplified nephroplasty as an adjunct to pyeloplasty in the more advanced obstructive cases is described and its greater use encouraged.